WO2019100518A1 - Dispositif d'affichage tête haute à réalité augmentée et procédé d'élimination d'images doubles - Google Patents

Dispositif d'affichage tête haute à réalité augmentée et procédé d'élimination d'images doubles Download PDF

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Publication number
WO2019100518A1
WO2019100518A1 PCT/CN2017/119164 CN2017119164W WO2019100518A1 WO 2019100518 A1 WO2019100518 A1 WO 2019100518A1 CN 2017119164 W CN2017119164 W CN 2017119164W WO 2019100518 A1 WO2019100518 A1 WO 2019100518A1
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WO
WIPO (PCT)
Prior art keywords
image
mirror
meridional
augmented reality
display device
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Application number
PCT/CN2017/119164
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English (en)
Chinese (zh)
Inventor
马斌斌
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苏州车萝卜汽车电子科技有限公司
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Publication of WO2019100518A1 publication Critical patent/WO2019100518A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
    • G02B2027/012—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility comprising devices for attenuating parasitic image effects

Definitions

  • the present application relates to the field of automobile head-up display, and in particular to an augmented reality head-up display device and a ghost-removing method.
  • AR-HUD Augmented Reality-Head Up Display
  • the two images projected at the current stage one image is an image with a projection distance of about 7 meters, overlapping with the actual environment, called: augmented reality image; the other image is an image with a projection distance of about 2 meters, showing the speed and condition information. , called: vehicle status image.
  • the method of eliminating ghosting is usually a custom windshield, and the polyvinyl butyral (English name Polyvinyl Butyral, PVB for short) inside the windshield has a wedge angle, so that the windshield inside and outside the windshield The surfaces are not parallel.
  • the inventors have found that the angular extent of the polyvinyl butyral wedge angle is related to the parameters and projection distance of the head-up display. Therefore, for the two images of the different projection distances described above, the ghost cannot be eliminated at the same time. In particular, the greater the difference in projection distance between the two images, the more severe the ghosting.
  • the main purpose of the present application is to provide an augmented reality head-up display device to solve the problem that the ghosting cannot be simultaneously eliminated in the related art.
  • an augmented reality head-up display device is provided.
  • An augmented reality head-up display device comprising: a mirror group and a display module, the display module for generating a first image source and a second image source; the mirror group for using the first The image source is reflected to the windshield to form a first image; the mirror set is further configured to reflect the second image source to the windshield to form a second image; the first shape formed by the mirror The image and the second image satisfy a preset condition of determining whether a projection distance of the meridional image of the first image and the meridional image of the second image is equal; if the meridional image of the first image and the second image are The projection distances of the meridional images are equal, and the astigmatism absolute values of the first image and the second image are adjusted; wherein the astigmatism absolute values of the first image and the second image are in the range of: 0D to Between 1.5D.
  • the mirror group includes: a first mirror for sharing a reflection surface as an optical path of the first image and the second image.
  • the first image and the second image that are formed by the mirror satisfy the following preset conditions, and further include any one or more of the following: a sagittal image imaging distance of the first image ⁇ 4m; wherein the first image is for displaying an augmented reality image; the sagittal image of the second image is imaged by a distance of 1 m to 5 m; wherein the second image is for displaying vehicle state information.
  • first image and the second image astigmatism absolute value ⁇ 1.5D.
  • the mirror group includes: a first mirror, a second mirror, and a third mirror, wherein the first mirror is a curved mirror, and the second mirror and the third mirror are plane mirrors or curved surfaces mirror.
  • a method of deghosting method comprising: determining whether a projection distance of a meridional image of the first image and a meridional image of the second image is equal; if the first image The projection distances of the meridional image of the second image and the meridional image of the second image are equal, and the absolute values of the astigmatism of the first image and the second image are adjusted;
  • the augmented reality head-up display device comprises: a mirror group and a display module The display module is configured to generate a first image source and a second image source; the mirror group is configured to reflect the first image source to a windshield to form a first image; the mirror group And for reflecting the second image source to the windshield to form a second image.
  • the astigmatism absolute values of the first image and the second image range from 0D to 1.5D.
  • the meridional image of the first image is less than the sagittal image.
  • the meridional image of the second image is greater than the sagittal image.
  • the astigmatism of the first image and the second image is absolutely adjusted by using the manner that the projection distances of the meridional image of the first image and the meridional image of the second image are equal (not absolutely equal).
  • the value achieves the purpose of eliminating ghosting at the same time, thereby realizing the technical effect of imaging the augmented reality image and the vehicle state image, thereby solving the technical problem that the ghost image cannot be simultaneously eliminated.
  • FIG. 1 is a schematic diagram of a ghost that cannot be simultaneously eliminated according to the related art
  • FIG. 2 is a schematic diagram of an augmented reality head-up display device according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of augmented reality head display method according to an embodiment of the present application.
  • the above partial terms may be used to indicate other meanings in addition to the orientation or positional relationship, for example, the term “upper” may also be used to indicate a certain dependency or connection relationship in some cases.
  • the specific meaning of these terms in this application can be understood on a case-by-case basis.
  • installation In addition, the terms “installation,” “set,” “set,” “connected,” “connected,” and “socketed” are to be understood broadly. For example, it may be a fixed connection, a detachable connection, or a one-piece construction; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or it may be two devices, components or components. Internal communication.
  • the specific meanings of the above terms in the present application can be understood on a case-by-case basis.
  • Both the inner and outer surfaces of the windshield reflect the projected image of the head-up display device, thereby forming two non-overlapping images.
  • the offset of the two images in the vertical direction is the ghost distance, and the unit is the distance value, such as mm.
  • the angle of the ghost relative to the human eye is defined as the ghost value, and the larger the opening angle, the easier the human eye can detect.
  • Vision Visual optical instruments can be used by people with different visions, so that the image is no longer infinity, but at a certain distance in front of or behind the human eye to meet the needs of myopia or hyperopia.
  • the unit is diopter and the symbol D is indicated. It is represented by the reciprocal of the distance, for example, the imaging is at infinity, the visual acuity is 0D; the imaging is located 1m in front of the human eye, the visual acuity is -1D; it is located 4m in front of the human eye, and the visual acuity is -0.25D.
  • Projection distance The distance from the human eye to the head-up display device to display the virtual image.
  • Astigmatism The image is imaged by the optical system.
  • the meridional image does not coincide with the sagittal image.
  • the distance between the two is called astigmatism.
  • PVB windshield with wedge angle At present, the windshield of passenger car is composed of inner windshield, outer windshield and PVB. PVB is a transparent diaphragm located between the inner and outer glass to improve the windshield. Safety and sound insulation.
  • the conventional PVB diaphragm is a layer of equal thickness diaphragm. With a wedge-shaped PVB windshield, the PVB diaphragm with unequal thickness is used, so that there is a wedge angle between the inner and outer glass of the windshield, which is thin and thick.
  • the inner and outer surfaces of the windshield are not parallel and are used to eliminate ghosting of the head-up display device.
  • FIG. 1 is a schematic diagram of a ghost that cannot be simultaneously eliminated according to the related art; using a reflection principle well known to an optical person, a mirror rotation angle A, and an exiting light rotation angle 2A. Therefore, two images with different imaging distances cannot eliminate ghosting at the same time.
  • the device in this embodiment can effectively solve the two image ghosts in the augmented reality head-up display device for eliminating the ghost problem.
  • the augmented reality head-up display device 100 of the embodiment includes: a mirror group and a display module, wherein the display module is configured to generate a first image source and a second image source; Reflecting the first image source to the windshield to form a first image; the mirror group is further configured to reflect the second image source to the windshield to form a second image; The first image and the second image satisfy a preset condition of determining whether a projection distance of a meridional image of the first image and a meridional image of the second image are equal; if the meridional of the first image Adjusting the astigmatism absolute values of the first image and the second image by equalizing the projection distances of the image and the meridional image of the second image; wherein the astigmatism absolute values of the first image and the second image The range is between 0D and 1.5D.
  • the augmented reality head-up display device in the present application projects two images, the augmented reality image of the far projection distance is the first image, and the vehicle state image of the near projection distance is the second image.
  • the augmented reality head-up display unit is used in conjunction with the wedge angle built into the windshield to project the two images.
  • Determining whether the projection distances of the meridional image of the first image and the meridional image of the second image are equal means that the meridional images of the first image and the second image are equal in projection distance, or substantially identical, or the difference is small. At this point, you can use the PVB windshield with wedge angle to eliminate the ghosting of the two images.
  • the mirror group includes: a first mirror 3 for use as an optical path of the first image and the second image Share the reflective surface.
  • the two image light paths of the head-up display device proposed by the present invention share one of the large mirrors.
  • the first image and the second image that are formed by the mirror satisfy the following preset conditions, and further include any one or more of the following:
  • the sagittal image imaging distance is ⁇ 4 m; wherein the first image is used to display an augmented reality image; or the sagittal image of the second image is imaged at a distance of 1 m to 5 m; wherein the second image is used for Display vehicle status information.
  • the first image and the second image astigmatism absolute value in the embodiment of the present application are ⁇ 1.5D.
  • the first image sagittal plane image imaging distance ⁇ 4m is used to display an augmented reality image, enhancing the display of the external environment.
  • the sagittal image is imaged at a distance of 7.5 m.
  • the second image sagittal image is imaged at a distance of 1 m to 5 m for displaying vehicle state information.
  • the sagittal image is imaged at a distance of 2 m.
  • the first image and the second image meridional image are imaged at a distance of 3.15 m.
  • the meridional image and the sagittal image have a difference of 0.18D ⁇ 1.5D. If there is a large astigmatism, it is easy to cause driver discomfort, and preferably, the difference in visibility is 0.25D.
  • the mirror group includes: a first mirror 3, a second mirror 4, and a third mirror 5, the first mirror 3 is a curved mirror, and the second mirror 4,
  • the third mirror 5 is a plane mirror or a curved mirror.
  • the first mirror 3, the second mirror 4, and the third mirror 5, the first display module 1 and the second display module 2 are disposed in the head display device housing.
  • the above display module may specifically be an image generating module such as an LCD, an OLED, an LCOS, or a DLP, and a necessary backlighting portion for generating an image source.
  • the first display module emits light, which is sequentially reflected by the anti-second mirror and the first mirror to the windshield to form a first image.
  • the second display module emits light, and is sequentially reflected by the third mirror and the first mirror to the windshield to form a second image. In this way, the first image is located above the second image as viewed along the driver's field of view.
  • the imaging distances of the meridional images of the first image and the second image are substantially identical to ensure that the glass with a specific wedge angle PVB can simultaneously attenuate the ghost.
  • the first mirror is a curved mirror
  • the second mirror and the third mirror are a plane mirror or a curved mirror.
  • the third mirror When the third mirror is a plane mirror, it functions to fold the optical path and compress the volume of the HUD. When the space volume is satisfied, the mirror 3 can be directly removed.
  • a method for implementing the above-described augmented reality head-up display device includes:
  • Step S102 determining whether the projection distances of the meridional image of the first image and the meridional image of the second image are equal;
  • Step S104 if the projection distances of the meridional image of the first image and the meridional image of the second image are equal, adjusting an astigmatic absolute value of the first image and the second image;
  • the augmented reality head-up display device includes: a mirror group and a display module, the display module is configured to generate a first image source and a second image source; the mirror group is configured to use the first image The source is reflected to the windshield to form a first image; the mirror set is further configured to reflect the second image source to the windshield to form a second image.
  • the astigmatism absolute values of the first image and the second image range from 0D to 1.5D. At least one of the first image and the second image has a large astigmatism, and the absolute value is ⁇ 0.05D. Determining whether the projection distances of the meridional image of the first image and the meridional image of the second image are equal, and if the projection distances of the meridional image of the first image and the meridional image of the second image are equal, adjusting the first image And an absolute value of the astigmatism of the second image.
  • the absolute value of the first image and the second image astigmatism is ⁇ 1.5D. If there is excessive astigmatism, driving for a long time may cause eye discomfort of the driver.
  • the meridional image of the first image is less than the sagittal image.
  • the first image meridional image is less than the sagittal image.
  • the image is located in the range of 2m to infinity in front of the human eye, the image of the meridian plane is close to the human eye, and the image of the sagittal plane is far from the human eye.
  • the meridional image is located between the human eye and the sagittal image along the line of sight of the human eye.
  • the meridional image of the second image is greater than the sagittal image.
  • the second image meridional image has a larger apparent power than the sagittal image.
  • the meridian image is far from the human eye, and the sagittal image is closer to the human eye.
  • the sagittal image is located between the human eye and the meridian image along the line of sight of the human eye.
  • the first image sagittal plane image is located 10 m in front of the human eye
  • the dioptric power is -0.1
  • the meridional image is located 4 m in front of the human eye
  • the visual acuity is -0.25, -0.25 ⁇ -0.1.
  • the second image sagittal plane image is located 2m in front of the human eye, and the dioptricity is -0.5; the meridional image is located 4m in front of the human eye, and the dioptricity is -0.25, -0.25>-0.5.
  • image one is aligned with image two in a vertical direction, preferably image one is above image two.
  • At least one image of image one and image two has a large astigmatism with an absolute value of ⁇ 0.05D.
  • image one and image two, the meridional image imaging distances are substantially identical.
  • the meridian image distance is not absolutely equal, if there is a very small difference, the imaging effect will be better.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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Abstract

L'invention concerne un dispositif d'affichage tête haute à réalité augmentée et un procédé d'élimination d'images doubles. Le dispositif comprend un groupe réflecteur et un module d'affichage. Le module d'affichage est utilisé pour générer une première source d'image et une seconde source d'image. Le groupe réflecteur est utilisé pour réfléchir la première source d'image sur un pare-brise pour former une première image et pour réfléchir la seconde source d'image sur le pare-brise pour former une seconde image. La première image et la seconde image formées par le groupe réflecteur satisfont les conditions prédéfinies suivantes : déterminer si une distance de projection d'une image méridionale de la première image et celle d'une image méridionale de la seconde image sont égales (S102); et ajuster les valeurs absolues d'aberration astigmate de la première image et de la seconde image si les distances de projection sont égales (S104). L'invention résout le problème technique selon lequel des images doubles sur un dispositif d'affichage tête haute de pare-brise ne peuvent pas être éliminées.
PCT/CN2017/119164 2017-11-22 2017-12-28 Dispositif d'affichage tête haute à réalité augmentée et procédé d'élimination d'images doubles WO2019100518A1 (fr)

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CN201711175806.4A CN107907999B (zh) 2017-11-22 2017-11-22 增强现实抬头显示装置以及消重影方法
CN201711175806.4 2017-11-22

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CN108955714A (zh) * 2018-04-28 2018-12-07 苏州车萝卜汽车电子科技有限公司 导航信息处理方法及装置、虚拟现实抬头显示装置
CN108983423A (zh) * 2018-07-26 2018-12-11 京东方科技集团股份有限公司 一种双目显示系统及车载抬头显示系统

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